20 Most Recent 1991 Oldsmobile Cutlass Supreme Questions & Answers

My 3.4 liter 91 Cutlass Supreme has similar problem when warm the engine misses (car jerks). But its fine at idle and without any accelerator pressure. The SERVICE ENGINE light also comes on intermittantly. I am going to test the ignition coils.

You can go to a nearby parts store and purchase a Haynes automotive reference guide and it contains all the different diagrams that would need. On the front of the book it would say 1990-94 lumina cutlass etc.

If not reachable from underneath the engine tips forward to change they make a holding tool. Loosen the dog bone engine mounts and lean on the car you'll see the engine move pull it forward with a bar then find something to hold it there. I hope this helps. Take Care.

Cores come in 2 general design locations--in dash and under hood. Both are replaceable but the dash tends to be more problematic as it may include removing the entire dash assembly. under-hood may require opening up the air conditioner system to access the air plenum. Search Youtube for "how to" videos to get a good idea of knowledge and skills required. The shop manual is available from auto part supply stores for around $30 and in some public libraries. You may have a split or lose hose and not the core itself. Suggest you first rent borrow or buy a remote inspection camera to locate exact leak location.

Frequently the float/in tank fuel pump assembly which is mounted in the gas tank is to blame for this. As you can see from the attached picture it is an all in one unit. It is something you might want an auto shop to handle. I have replaced some that are accessible from under the trunk mat but it does involve fuel so I would recommend a mechanic to replace it.

If your vehicle is fuel injected I would say you have a blown fuel regulator. This would cause excess fuel into the cylinders (flooding) causing a miss and coughing and also blow fuel into the air breather. If will also cause the vehicle to run poorly and could cause the vehicle to stall. Also to much fuel on startup can flood the cylinders and cause the vehicle to no start.

Condenser Blocked From Putting Water In It Put All Anti Freeze In it To The Top Take The Cap Off While Its Running For 10 Minutes Is It Circulating,But Is Not Circulating From The Condenser? Take The Hose Off Under The Dash,It Connects To The Condensor Is It Dirty?

most receivers are located underdash on drivers side which you may have to take vehicle to an alarm shop for diagnosting. Or you may have a weak battery in the remote.

there is a draw on the system when not in use. you will have to find which circuit the draw is on and then find out what in the system is causing the draw in order to fix it. this is a job for a repair shop. have you had the battery completely checked out it could be the battery has an internal problem. start with the battery first.

CHECK IGNITION MODULE FUSE.AND CHECK FOR POWER GOING TO MODULE AND COILS.IF NO POWER PROBLEM IN IGNITION MODULE FUSE OR LOOSE BROKEN WIRE.IF POWER GOING TO IGNITION MODULE.THE IGNITION MODULE FAULTY.TO SAVE MONEY AND TIME.HAVE CAR SCANNED TO MAKE SURE YOU DONT HAVE ECM OR PCM PROBLEMS.YOU DONT WANT TO BUY A IGNITION MODULE IF YOU DONT NEED IT BECAUSE THEY COST FROM $100.00 TO $200.00.THATS WHY SCAN IT FIRST.

it could be the brake light relay

I had an '89 Mustang the had cracks in my fuel injectors, no fuses on them but that's Ford and GM's Difference. While I was looking in junkyards for my fuel injectors to replace them, I was also looking for a GM alternator. I noticed that there were a lot of GM cars that had silicone coated over the Fuel injectors on many of the V6 model Cars! I determined that this was their solution, Silicone's cheap and you have little to loose by trying this. New fuel injectors can be very expensive and you'll never find any good used ones from what I saw, 75 percent had this done to them and the other 25 were probably bad but didn't know how to patch them up.

Depending on the type of car you have, it can be very easy or very difficult. The easy ones will have a circular metal plate on the firewall with about 10 very small screws around its circumference. Protruding from that plate will also be a small usually black can looking object about the size of a soup can. This is the fan motor. Just disconnect positive terminal on battery before starting, then remove the series of small screws. They are usually a hex type screw, not a slotted. The whole assembly will lift out and the replacement will look just like this one you've removed. That's the easy one... the difficult ones are under the dash, passenger side inside the heater box. They look like the one I described previously, but usually require a lot more disassembly of surrounding components. Best of luck!

when you took it out you did not see how it goes back , look on yourtube , that is prob your best bet or go on ebay and get a cd manual for it ,

Use care in removing the fuel injectors to prevent damage to the electrical connector pins on the injector and the nozzle. The fuel injector is serviced as a complete assembly only and should not be immersed in any kind of cleaner. Support the fuel rail to avoid damaging other components while removing the injector. Be sure to note that different injectors are calibrated for different flow rates. When ordering new fuel injectors, be sure to order the identical part number that is inscribed on the bottom of the old injector.

sounds like u have a problem with your coil pack that is what sends spark to plugs